Diffusional permeability (P) to sucrose (Psuc) and Na+ (PNa+) was determined in specimens of rabbit sternal parietal pericardium, which may be obtained without stripping. Specimens were mounted in an… (More)

The toad gallbladder epithelium is much more selective than that of the rabbit expecially as to the permeability of two molecules like urea and thiourea. These observations can probably be attributed… (More)

S-Carbocysteine-lysine salt monohydrate (S-CMC-Lys) has been shown to open a Cl- channel in the trachea, thus aiding fluid secretion. The aim of this study was to characterize the channel and the… (More)

We have previously demonstrated that polypeptides (elcatonin and ACTH) can be actively absorbed across the rabbit nasal mucosa. In this paper we show that elcatonin is also transported when it is… (More)

The specific transcytosis of polypeptides, demonstrated in the nasal respiratory mucosa of the rabbit, seems to be involved in antigen sampling at the airway entry, since absorption has been shown… (More)